DENDRITE SPACINGS IN DIRECTIONALLY SOLIDIFIED SUPERALLOY PWA-1480

[摘要] Primary dendrite spacings and side-branch coarsening kinetics were examined in specimens of the single-crystal multicomponent commercial superalloy PWA-1480, which were directionally solidified in a positive thermal gradient. The experimentally observed dependence of primary dendrite spacings and side-branch coarsening kinetics on growth rate and thermal gradient were in agreement with the behavior predicted by analytical models developed for binary alloys.

[发布日期] 1991-02-01